Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**renjer****Member**- Registered: 2006-04-29
- Posts: 50

√ (4+∈²)

where ∈ is a variable (u can call it E if u like). I know its the binomial expansion but i can't seem to do it.

*Last edited by renjer (2007-03-08 18:20:22)*

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**Stanley_Marsh****Member**- Registered: 2006-12-13
- Posts: 345

*Last edited by Stanley_Marsh (2007-03-08 19:02:25)*

Numbers are the essence of the Universe

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**Stanley_Marsh****Member**- Registered: 2006-12-13
- Posts: 345

I just looked up some information for you , I haven't seriously learned the expansion.

Numbers are the essence of the Universe

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**renjer****Member**- Registered: 2006-04-29
- Posts: 50

Can someone else expand this for me pls?

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**Toast****Real Member**- Registered: 2006-10-08
- Posts: 1,321

Why would you want to expand that? Is it not already in simplest form?

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**renjer****Member**- Registered: 2006-04-29
- Posts: 50

No, its not. We have to somehow expand that and compare it to another equation.

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Is it just me, or aren't this:

and this:

significantly different??

*Last edited by John E. Franklin (2007-03-09 03:36:09)*

**igloo** **myrtilles** **fourmis**

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**luca-deltodesco****Member**- Registered: 2006-05-05
- Posts: 1,470

yes they are, the binomial expansion can only be used in the form

(1+a)^n where -1 < n < 1.

*Last edited by luca-deltodesco (2007-03-09 03:57:43)*

The Beginning Of All Things To End.

The End Of All Things To Come.

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